Flex Pipe Leak
#1
AudiWorld Senior Member
Thread Starter
Flex Pipe Leak
Car started sounding awfully loud inside, rolled down the window and it sounds like crap. Air is leaking from the flex pipe, which is pretty common, as I understand. I was thinking about changing to a different exhaust system anyway, and was curious if
1) there was a way to eliminate flex pipes, or at least install some flex pipes that don't fatigue so easily
2) it failed for any particular reason. It got loud after a bit of spirited driving, which leads me to wonder if motor mount squish allowed the motor to move relative to the exhaust system and caused the failure.
When replacing flex pipes, where else should I check for failures, and which flex pipes should I use, if not new OEM down pipes?
1) there was a way to eliminate flex pipes, or at least install some flex pipes that don't fatigue so easily
2) it failed for any particular reason. It got loud after a bit of spirited driving, which leads me to wonder if motor mount squish allowed the motor to move relative to the exhaust system and caused the failure.
When replacing flex pipes, where else should I check for failures, and which flex pipes should I use, if not new OEM down pipes?
#5
Because the engine is not solidly mounted, nor is the exhaust. If there was no flex joint, the weak link would be the piping, welds, or the headers, or , or, or.. Some cars have a ball type pivot, with springs for tension, but they have their own issues.
Short answer is, yes, ALL cars have some sort of flexible joint somewhere in the exhaust, to prevent self-injury.
Short answer is, yes, ALL cars have some sort of flexible joint somewhere in the exhaust, to prevent self-injury.
#7
AudiWorld Super User
None of my Saab 900 turbo cars up to 1987 had flex pipes. They also had hydraulic engine mounts.
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#10
AudiWorld Senior Member
Thread Starter
I'm thinking I'm just going to go to a muffler shop tomorrow and have them handle it. Maybe they can delete the cats while they're at it.